On my Pc vista doesn't show the thumbnails, so I have no clue what the files are, pictures included. I had to add registry settings to make it work, also there is a problem, say I click on a TEXT or html file and it previews in the preview pane. Well if I open up that file and edit it and saving it, then it says it cant as the file is in use. Well somehow the preview pane openes up the file for read/write access, meaning if there is any process trying to write to the file it can't. this drives me nuts, as once I click on a file and it previews, i choose open/edit, application pops up, but before I can save the file, I need to click back on the window with the preview pane, and make sure I click off the file, so now the file can be saved. Same happens with word files.
Ya that buggs way explorer decides to display a folder sucks, some times, when in a folder it shows 'Ratings' and 'size' treating my files as music, and fails to show date modified and the useful info I need. I have to modify the folder options to fix it.